What is the CVSS score of CVE-2026-3732?

CVE-2026-3732 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2026-3732?

Yes, a public proof-of-concept exploit is available for CVE-2026-3732. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3732?

Within 24 hours: Identify and inventory all Tenda F453 devices in your network and isolate them from critical systems pending remediation. Within 7 days: Evaluate replacement hardware or firmware alternatives; contact Tenda for patch availability and timeline; implement compensating controls listed below. Within 30 days: Replace affected Tenda F453 devices with patched alternatives or migrate to alternative vendor equipment; verify remediation across all affected instances.

F453 Firmware CVE-2026-3732

HIGH

Buffer Overflow (CWE-119)

2026-03-08 cna@vuldb.com

Buffer Overflow Stack Overflow Tenda F453 Firmware

8.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Authenticate to Tenda F453 web interface
Exploit

Send crafted POST request to /goform/exeCommand
Execution

Overflow cmdinput parameter via strcpy
Impact

Execute arbitrary code as root

Vulnerability Assessment

Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	Tenda F453 firmware version 1.0.0.3 with /goform/exeCommand endpoint accessible. Requires valid login credentials to access the vulnerable function. Default web interface must be enabled on HTTP/HTTPS.
Impact	CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this flaw, stack-based buffer overflow.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Stack-based buffer overflow in Tenda F453 firmware allows unauthenticated remote attackers to execute arbitrary code through the cmdinput parameter in the /goform/exeCommand function, with public exploit code already available. The vulnerability affects F453 firmware version 1.0.0.3 and has a CVSS score of 8.8, enabling complete compromise of affected devices without requiring user interaction. No patch is currently available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 8.8

A security vulnerability has been detected in Tenda F453 1.0.0.3. This affects the function strcpy of the file /goform/exeCommand. [CVSS 8.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-119 (Buffer Overflow). Affects F453 Firmware. A security vulnerability has been detected in Tenda F453 1.0.0.3. This affects the function strcpy of the file /goform/exeCommand. The manipulation of the argument cmdinput leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Mar 09, 2026 - 15:19 vuln.today

Public exploit code

CVE Published

Mar 08, 2026 - 11:15 nvd

HIGH 8.8

DescriptionCVE.org

A security vulnerability has been detected in Tenda F453 1.0.0.3. This affects the function strcpy of the file /goform/exeCommand. The manipulation of the argument cmdinput leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Executive ViewAI

Why It Matters

CVE-2026-3732 is a critical remote code execution vulnerability affecting Tenda F453 wireless routers that allows unauthenticated attackers to execute arbitrary commands. Organizations using this device model are at immediate risk of network compromise, data exfiltration, and potential lateral movement into corporate systems. This vulnerability poses a significant threat as no patch is currently available from the vendor.

Business Impact: High

Compensating Controls

Implement WAF rules to block requests to /goform/exeCommand endpoint; restrict network access to affected devices via firewall segmentation and ACLs; disable remote management interfaces where possible; monitor for suspicious command execution patterns; consider temporary disconnection of non-critical Tenda F453 devices until patching is available; implement network intrusion detection signatures for exploitation attempts.

Threat Intelligence Overview

EPSS Score

0.1%

Top 77% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +44

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Stack-based Buffer Overflow HIGH

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.